./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:13:52,893 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:13:53,000 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-12 00:13:53,013 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:13:53,013 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:13:53,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:13:53,049 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:13:53,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:13:53,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:13:53,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:13:53,054 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:13:53,055 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:13:53,056 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:13:53,060 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:13:53,061 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:13:53,061 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:13:53,062 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:13:53,062 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:13:53,062 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:13:53,063 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:13:53,063 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:13:53,064 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:13:53,065 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:13:53,066 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:13:53,066 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:13:53,067 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:13:53,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:13:53,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:13:53,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:13:53,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:13:53,070 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:13:53,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:13:53,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:13:53,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:13:53,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:13:53,072 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:13:53,072 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:13:53,072 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:13:53,073 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:13:53,073 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:13:53,073 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:13:53,074 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:13:53,074 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2023-11-12 00:13:53,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:13:53,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:13:53,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:13:53,424 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:13:53,425 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:13:53,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2023-11-12 00:13:56,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:13:57,127 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:13:57,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2023-11-12 00:13:57,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/data/45ce00d06/1509fdaa563f4da6bc1c0a510c0b6bab/FLAG252b3d5f5 [2023-11-12 00:13:57,189 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/data/45ce00d06/1509fdaa563f4da6bc1c0a510c0b6bab [2023-11-12 00:13:57,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:13:57,198 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:13:57,203 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:13:57,204 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:13:57,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:13:57,210 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:57" (1/1) ... [2023-11-12 00:13:57,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@134a923a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:13:57, skipping insertion in model container [2023-11-12 00:13:57,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:13:57" (1/1) ... [2023-11-12 00:13:57,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:13:57,641 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2023-11-12 00:13:57,650 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2023-11-12 00:13:58,987 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:58,991 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:58,992 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:58,995 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:58,997 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,015 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,016 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,018 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,019 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,021 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,022 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,023 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,023 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,530 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:13:59,533 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:13:59,535 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:13:59,538 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:13:59,540 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:13:59,541 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:13:59,543 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:13:59,544 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:13:59,544 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:13:59,560 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:13:59,740 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,753 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,759 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,766 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,835 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,836 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,837 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,837 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,837 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,838 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,838 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,839 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,839 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,840 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,840 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,840 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,841 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,847 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,848 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,850 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,851 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,858 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,863 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,873 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,874 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,874 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:13:59,924 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:13:59,938 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2023-11-12 00:13:59,939 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2023-11-12 00:13:59,977 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,977 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,978 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,978 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,979 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,985 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,986 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,987 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,987 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,988 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,989 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,990 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:13:59,990 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-12 00:14:00,030 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-12 00:14:00,031 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-12 00:14:00,032 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-12 00:14:00,035 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-12 00:14:00,036 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-12 00:14:00,037 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-12 00:14:00,038 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-12 00:14:00,039 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-12 00:14:00,039 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-12 00:14:00,107 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,107 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,109 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,115 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,124 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2023-11-12 00:14:00,162 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,163 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,163 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,164 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,164 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,165 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,165 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,166 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,166 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,166 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,167 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,167 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,167 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,168 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,169 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,169 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,169 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,176 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,177 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,184 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,184 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,185 WARN L1577 CHandler]: Possible shadowing of function index [2023-11-12 00:14:00,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:00,492 WARN L672 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,493 WARN L672 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,493 WARN L672 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,493 WARN L672 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,493 WARN L672 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,494 WARN L672 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,494 WARN L672 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,494 WARN L672 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,494 WARN L672 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,494 WARN L672 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,495 WARN L672 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,495 WARN L672 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,495 WARN L672 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,495 WARN L672 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,495 WARN L672 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:00,504 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:14:00,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00 WrapperNode [2023-11-12 00:14:00,505 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:00,506 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:00,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:14:00,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:14:00,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,640 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,723 INFO L138 Inliner]: procedures = 696, calls = 1888, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 820 [2023-11-12 00:14:00,723 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:00,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:14:00,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:14:00,725 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:14:00,735 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,735 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,746 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,747 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,836 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,854 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:14:00,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:14:00,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:14:00,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:14:00,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (1/1) ... [2023-11-12 00:14:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:00,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:00,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:14:00,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:14:00,956 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2023-11-12 00:14:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2023-11-12 00:14:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-12 00:14:00,957 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-12 00:14:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:14:00,957 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-12 00:14:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-12 00:14:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-12 00:14:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-12 00:14:00,958 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-12 00:14:00,958 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-12 00:14:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2023-11-12 00:14:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2023-11-12 00:14:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:14:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-12 00:14:00,959 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-12 00:14:00,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-12 00:14:00,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-12 00:14:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:14:00,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:14:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:14:00,961 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2023-11-12 00:14:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2023-11-12 00:14:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2023-11-12 00:14:00,962 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2023-11-12 00:14:00,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:14:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:14:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-12 00:14:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-12 00:14:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-12 00:14:00,963 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-12 00:14:00,963 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2023-11-12 00:14:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2023-11-12 00:14:00,965 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-12 00:14:00,968 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-12 00:14:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-12 00:14:00,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-12 00:14:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-12 00:14:00,970 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-12 00:14:00,970 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2023-11-12 00:14:00,971 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2023-11-12 00:14:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:14:00,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:14:00,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:14:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2023-11-12 00:14:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2023-11-12 00:14:00,977 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-12 00:14:00,977 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-12 00:14:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-12 00:14:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-12 00:14:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:14:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:14:00,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-12 00:14:00,978 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:14:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2023-11-12 00:14:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:14:00,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-12 00:14:00,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:14:01,320 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:14:01,323 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:14:02,734 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:14:03,067 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:14:03,067 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 00:14:03,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:03 BoogieIcfgContainer [2023-11-12 00:14:03,071 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:14:03,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:14:03,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:14:03,077 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:14:03,077 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:13:57" (1/3) ... [2023-11-12 00:14:03,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247532ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:03, skipping insertion in model container [2023-11-12 00:14:03,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:00" (2/3) ... [2023-11-12 00:14:03,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@247532ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:14:03, skipping insertion in model container [2023-11-12 00:14:03,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:14:03" (3/3) ... [2023-11-12 00:14:03,083 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2023-11-12 00:14:03,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:14:03,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 00:14:03,178 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:14:03,190 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c9bc87f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:14:03,190 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 00:14:03,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 253 states, 132 states have (on average 1.2196969696969697) internal successors, (161), 135 states have internal predecessors, (161), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-11-12 00:14:03,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-12 00:14:03,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:03,216 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:03,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:03,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:03,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1410869993, now seen corresponding path program 1 times [2023-11-12 00:14:03,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:03,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571910185] [2023-11-12 00:14:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:03,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:04,435 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:14:04,435 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:04,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571910185] [2023-11-12 00:14:04,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571910185] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:04,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911305782] [2023-11-12 00:14:04,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:04,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:04,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:04,444 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:04,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:14:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:05,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 00:14:05,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:05,220 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-12 00:14:05,220 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:05,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911305782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:05,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:14:05,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2023-11-12 00:14:05,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607409554] [2023-11-12 00:14:05,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:05,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 00:14:05,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:05,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 00:14:05,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:14:05,261 INFO L87 Difference]: Start difference. First operand has 253 states, 132 states have (on average 1.2196969696969697) internal successors, (161), 135 states have internal predecessors, (161), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:14:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:05,947 INFO L93 Difference]: Finished difference Result 477 states and 692 transitions. [2023-11-12 00:14:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 00:14:05,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 79 [2023-11-12 00:14:05,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:05,968 INFO L225 Difference]: With dead ends: 477 [2023-11-12 00:14:05,968 INFO L226 Difference]: Without dead ends: 252 [2023-11-12 00:14:05,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:14:05,980 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 33 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:05,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 1134 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 00:14:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-11-12 00:14:06,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2023-11-12 00:14:06,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 132 states have (on average 1.1893939393939394) internal successors, (157), 135 states have internal predecessors, (157), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2023-11-12 00:14:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 349 transitions. [2023-11-12 00:14:06,057 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 349 transitions. Word has length 79 [2023-11-12 00:14:06,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:06,058 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 349 transitions. [2023-11-12 00:14:06,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-12 00:14:06,059 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 349 transitions. [2023-11-12 00:14:06,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-12 00:14:06,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:06,064 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:06,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:06,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-12 00:14:06,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:06,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:06,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1761710811, now seen corresponding path program 1 times [2023-11-12 00:14:06,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:06,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273108109] [2023-11-12 00:14:06,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:06,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:07,114 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-12 00:14:07,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:07,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273108109] [2023-11-12 00:14:07,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273108109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:14:07,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987062347] [2023-11-12 00:14:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:07,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:07,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:07,117 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:07,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:14:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:07,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 2205 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:14:07,715 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-12 00:14:07,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:07,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987062347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:07,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:14:07,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2023-11-12 00:14:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880281526] [2023-11-12 00:14:07,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:07,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:14:07,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:07,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:14:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:14:07,845 INFO L87 Difference]: Start difference. First operand 252 states and 349 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:14:08,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:08,810 INFO L93 Difference]: Finished difference Result 487 states and 690 transitions. [2023-11-12 00:14:08,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:14:08,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2023-11-12 00:14:08,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:08,816 INFO L225 Difference]: With dead ends: 487 [2023-11-12 00:14:08,816 INFO L226 Difference]: Without dead ends: 265 [2023-11-12 00:14:08,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2023-11-12 00:14:08,819 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 47 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:08,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1656 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:14:08,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-12 00:14:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 263. [2023-11-12 00:14:08,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-11-12 00:14:08,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2023-11-12 00:14:08,870 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 87 [2023-11-12 00:14:08,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:08,872 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2023-11-12 00:14:08,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-12 00:14:08,873 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2023-11-12 00:14:08,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-12 00:14:08,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:08,884 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:08,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:09,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:09,095 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:09,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:09,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1024812289, now seen corresponding path program 1 times [2023-11-12 00:14:09,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:09,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502682798] [2023-11-12 00:14:09,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:09,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:09,219 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:09,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881318165] [2023-11-12 00:14:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:09,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:09,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:09,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 00:14:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:09,800 INFO L262 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:14:09,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:09,890 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-12 00:14:09,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:09,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:09,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502682798] [2023-11-12 00:14:09,890 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:09,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881318165] [2023-11-12 00:14:09,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881318165] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:09,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:09,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 00:14:09,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205374326] [2023-11-12 00:14:09,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 00:14:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:09,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 00:14:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-12 00:14:09,895 INFO L87 Difference]: Start difference. First operand 263 states and 374 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:14:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:10,812 INFO L93 Difference]: Finished difference Result 502 states and 722 transitions. [2023-11-12 00:14:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:14:10,813 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 96 [2023-11-12 00:14:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:10,816 INFO L225 Difference]: With dead ends: 502 [2023-11-12 00:14:10,817 INFO L226 Difference]: Without dead ends: 269 [2023-11-12 00:14:10,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:14:10,819 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 40 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:10,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1404 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-12 00:14:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-12 00:14:10,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 263. [2023-11-12 00:14:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-11-12 00:14:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2023-11-12 00:14:10,866 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 96 [2023-11-12 00:14:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:10,867 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2023-11-12 00:14:10,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-12 00:14:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2023-11-12 00:14:10,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-12 00:14:10,871 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:10,872 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:10,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:11,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:11,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:11,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:11,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1654946014, now seen corresponding path program 1 times [2023-11-12 00:14:11,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:11,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803268953] [2023-11-12 00:14:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:11,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:11,211 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:11,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653197144] [2023-11-12 00:14:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:11,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:11,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:11,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:11,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 00:14:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:11,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 2391 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:14:11,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:11,902 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 00:14:11,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:11,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:11,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803268953] [2023-11-12 00:14:11,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:11,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653197144] [2023-11-12 00:14:11,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653197144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:11,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:11,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:14:11,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440303518] [2023-11-12 00:14:11,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:11,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:14:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:11,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:14:11,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:14:11,906 INFO L87 Difference]: Start difference. First operand 263 states and 374 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-12 00:14:12,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:12,867 INFO L93 Difference]: Finished difference Result 504 states and 723 transitions. [2023-11-12 00:14:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:14:12,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 104 [2023-11-12 00:14:12,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:12,875 INFO L225 Difference]: With dead ends: 504 [2023-11-12 00:14:12,875 INFO L226 Difference]: Without dead ends: 271 [2023-11-12 00:14:12,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:14:12,878 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 63 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:12,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1889 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:14:12,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-12 00:14:12,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 263. [2023-11-12 00:14:12,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2023-11-12 00:14:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 374 transitions. [2023-11-12 00:14:12,910 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 374 transitions. Word has length 104 [2023-11-12 00:14:12,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:12,912 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 374 transitions. [2023-11-12 00:14:12,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2023-11-12 00:14:12,913 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 374 transitions. [2023-11-12 00:14:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-12 00:14:12,918 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:12,918 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:12,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:13,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:13,128 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:13,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:13,129 INFO L85 PathProgramCache]: Analyzing trace with hash -379211994, now seen corresponding path program 1 times [2023-11-12 00:14:13,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:13,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360849865] [2023-11-12 00:14:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:13,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:13,225 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:13,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1517659114] [2023-11-12 00:14:13,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:13,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:13,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:13,227 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:13,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 00:14:13,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:13,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 2523 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-12 00:14:13,887 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:13,979 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-12 00:14:13,979 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:13,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:13,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360849865] [2023-11-12 00:14:13,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:13,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517659114] [2023-11-12 00:14:13,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517659114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:13,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:13,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 00:14:13,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663699879] [2023-11-12 00:14:13,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:13,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 00:14:13,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:13,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 00:14:13,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 00:14:13,982 INFO L87 Difference]: Start difference. First operand 263 states and 374 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-12 00:14:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:14,725 INFO L93 Difference]: Finished difference Result 472 states and 679 transitions. [2023-11-12 00:14:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 00:14:14,727 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 113 [2023-11-12 00:14:14,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:14,733 INFO L225 Difference]: With dead ends: 472 [2023-11-12 00:14:14,733 INFO L226 Difference]: Without dead ends: 265 [2023-11-12 00:14:14,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:14:14,736 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 63 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 1661 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:14,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 1661 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 00:14:14,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2023-11-12 00:14:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2023-11-12 00:14:14,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 145 states have internal predecessors, (168), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2023-11-12 00:14:14,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 377 transitions. [2023-11-12 00:14:14,757 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 377 transitions. Word has length 113 [2023-11-12 00:14:14,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:14,758 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 377 transitions. [2023-11-12 00:14:14,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-12 00:14:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 377 transitions. [2023-11-12 00:14:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-11-12 00:14:14,760 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:14,761 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:14,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:14,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:14,973 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:14,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash 990241474, now seen corresponding path program 1 times [2023-11-12 00:14:14,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:14,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717749611] [2023-11-12 00:14:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:15,107 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:15,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360772879] [2023-11-12 00:14:15,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:15,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:15,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:15,113 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:15,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 00:14:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:15,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:14:15,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:15,915 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-12 00:14:15,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:15,916 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717749611] [2023-11-12 00:14:15,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:15,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360772879] [2023-11-12 00:14:15,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360772879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:15,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:15,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-12 00:14:15,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627063555] [2023-11-12 00:14:15,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:15,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 00:14:15,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:15,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 00:14:15,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 00:14:15,919 INFO L87 Difference]: Start difference. First operand 265 states and 377 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-12 00:14:17,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:17,163 INFO L93 Difference]: Finished difference Result 482 states and 693 transitions. [2023-11-12 00:14:17,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:14:17,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 129 [2023-11-12 00:14:17,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:17,166 INFO L225 Difference]: With dead ends: 482 [2023-11-12 00:14:17,167 INFO L226 Difference]: Without dead ends: 273 [2023-11-12 00:14:17,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:14:17,169 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 81 mSDsluCounter, 1858 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:17,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 2140 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-12 00:14:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-11-12 00:14:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 271. [2023-11-12 00:14:17,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 146 states have (on average 1.1917808219178083) internal successors, (174), 149 states have internal predecessors, (174), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2023-11-12 00:14:17,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 385 transitions. [2023-11-12 00:14:17,189 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 385 transitions. Word has length 129 [2023-11-12 00:14:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:17,190 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 385 transitions. [2023-11-12 00:14:17,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-11-12 00:14:17,191 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 385 transitions. [2023-11-12 00:14:17,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2023-11-12 00:14:17,193 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:17,194 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:17,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:17,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:17,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash 688210812, now seen corresponding path program 1 times [2023-11-12 00:14:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:17,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182374875] [2023-11-12 00:14:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:17,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:17,514 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:17,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884965696] [2023-11-12 00:14:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:17,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:17,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:17,516 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:17,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 00:14:18,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:18,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 2887 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 00:14:18,326 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-12 00:14:18,439 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:18,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:18,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182374875] [2023-11-12 00:14:18,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:18,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884965696] [2023-11-12 00:14:18,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884965696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:18,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:18,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 00:14:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496765319] [2023-11-12 00:14:18,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:18,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 00:14:18,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:18,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 00:14:18,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 00:14:18,443 INFO L87 Difference]: Start difference. First operand 271 states and 385 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-12 00:14:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:19,369 INFO L93 Difference]: Finished difference Result 492 states and 706 transitions. [2023-11-12 00:14:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 00:14:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 147 [2023-11-12 00:14:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:19,373 INFO L225 Difference]: With dead ends: 492 [2023-11-12 00:14:19,373 INFO L226 Difference]: Without dead ends: 277 [2023-11-12 00:14:19,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-12 00:14:19,376 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 70 mSDsluCounter, 1636 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1926 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:19,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1926 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 00:14:19,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-12 00:14:19,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 271. [2023-11-12 00:14:19,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 146 states have (on average 1.1917808219178083) internal successors, (174), 149 states have internal predecessors, (174), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2023-11-12 00:14:19,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 385 transitions. [2023-11-12 00:14:19,395 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 385 transitions. Word has length 147 [2023-11-12 00:14:19,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:19,396 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 385 transitions. [2023-11-12 00:14:19,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-12 00:14:19,396 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 385 transitions. [2023-11-12 00:14:19,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-12 00:14:19,399 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:19,399 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:19,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:19,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-12 00:14:19,611 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:19,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:19,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1933040356, now seen corresponding path program 1 times [2023-11-12 00:14:19,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:19,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270642927] [2023-11-12 00:14:19,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:19,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:19,721 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:19,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144051960] [2023-11-12 00:14:19,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:19,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:19,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:19,723 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:19,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 00:14:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:20,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 00:14:20,688 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-12 00:14:20,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:20,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:20,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270642927] [2023-11-12 00:14:20,809 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:20,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144051960] [2023-11-12 00:14:20,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144051960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:20,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:20,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:14:20,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102583497] [2023-11-12 00:14:20,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:20,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:14:20,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:20,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:14:20,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:14:20,812 INFO L87 Difference]: Start difference. First operand 271 states and 385 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-12 00:14:22,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:14:22,019 INFO L93 Difference]: Finished difference Result 486 states and 696 transitions. [2023-11-12 00:14:22,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 00:14:22,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 163 [2023-11-12 00:14:22,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:14:22,023 INFO L225 Difference]: With dead ends: 486 [2023-11-12 00:14:22,023 INFO L226 Difference]: Without dead ends: 271 [2023-11-12 00:14:22,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-11-12 00:14:22,026 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 93 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-12 00:14:22,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 2379 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-12 00:14:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-12 00:14:22,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 263. [2023-11-12 00:14:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 143 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2023-11-12 00:14:22,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 372 transitions. [2023-11-12 00:14:22,052 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 372 transitions. Word has length 163 [2023-11-12 00:14:22,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:14:22,052 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 372 transitions. [2023-11-12 00:14:22,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2023-11-12 00:14:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 372 transitions. [2023-11-12 00:14:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-12 00:14:22,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:14:22,056 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 00:14:22,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 00:14:22,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:22,269 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 00:14:22,269 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:14:22,269 INFO L85 PathProgramCache]: Analyzing trace with hash -930617340, now seen corresponding path program 1 times [2023-11-12 00:14:22,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:14:22,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375166062] [2023-11-12 00:14:22,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:22,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:14:22,449 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-12 00:14:22,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [788353861] [2023-11-12 00:14:22,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:14:22,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:14:22,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:22,451 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:14:22,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c72a782-7361-4aed-a8ab-b923edce7b85/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 00:14:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:14:23,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 3259 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-12 00:14:23,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:14:24,154 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2023-11-12 00:14:24,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-12 00:14:24,185 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2023-11-12 00:14:24,186 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:14:24,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:14:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375166062] [2023-11-12 00:14:24,186 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-12 00:14:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788353861] [2023-11-12 00:14:24,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788353861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:14:24,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:14:24,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-12 00:14:24,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473740966] [2023-11-12 00:14:24,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:14:24,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 00:14:24,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:14:24,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 00:14:24,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-12 00:14:24,190 INFO L87 Difference]: Start difference. First operand 263 states and 372 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-12 00:14:26,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:28,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:30,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:32,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:35,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:37,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:39,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:41,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-12 00:14:43,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:45,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 00:14:47,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-11-12 00:14:49,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]